1887

Abstract

SUMMARY: For the isolation of blue-green algae from soil and fresh water, temperature is a selective factor of major importance. In a nutritionally non-selective mineral medium, which at 25° supported growth of blue-green algae and of many eucaryotic algae, the development of eucaryotic algae was almost completely suppressed by incubation at 35°. Both the number and variety of blue-green algae recoverable at 35° were greater than those recoverable from parallel cultures incubated at 25°. When a combined-nitrogen source was omitted from the enrichment medium, only blue-green algae developed at both 25° and 35°; the microflora consisted exclusively of heterocyst-forming filamentous types, other groups of blue-green algae being eliminated.

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/content/journal/micro/10.1099/00221287-51-2-203
1968-04-01
2022-07-02
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